EP0598208A1 - Mandrin de forage autoserrant - Google Patents

Mandrin de forage autoserrant Download PDF

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Publication number
EP0598208A1
EP0598208A1 EP93115896A EP93115896A EP0598208A1 EP 0598208 A1 EP0598208 A1 EP 0598208A1 EP 93115896 A EP93115896 A EP 93115896A EP 93115896 A EP93115896 A EP 93115896A EP 0598208 A1 EP0598208 A1 EP 0598208A1
Authority
EP
European Patent Office
Prior art keywords
ring
retaining ring
locking
chuck
toothing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93115896A
Other languages
German (de)
English (en)
Other versions
EP0598208B1 (fr
Inventor
Günter Horst Röhm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0598208A1 publication Critical patent/EP0598208A1/fr
Application granted granted Critical
Publication of EP0598208B1 publication Critical patent/EP0598208B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1246—Jaws movement actuated by a bolt with conical screw-thread
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S279/00—Chucks or sockets
    • Y10S279/902—Keyless type socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17641—Threaded central cone and jaw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/32—Means to prevent jaw loosening

Definitions

  • the invention relates to a self-tightening drill chuck for operation on a percussion drill spindle, with chuck jaws for clamping a drilling tool, a jaw guide part guiding the chuck jaws inclined to the chuck axis, furthermore with a chuck body carrying a clamping thread for adjusting the chuck jaws and connectable to the percussion drill spindle, the jaw guide part being rotatable on
  • the chuck body is guided and non-rotatably connected to a locking ring that is axially immovable relative to the chuck body, and to a retaining ring that limits the re-tensioning, is axially displaceable on the chuck body and rotatable between limit stops, which with a toothed ring under the force of at least one locking spring axially into one on the side of the locking ring located counter toothing engages and can be released from the toothing engagement by axial displacement against the force of the locking spring.
  • Self-tightening drill chucks of this type are known in various other designs from, for example, DE 34 32 918 C2 and DE 39 03 443 C1.
  • the retaining ring on the chuck body is only between two limit stops rotatable, which are spaced apart in the circumferential direction of the chuck body by the tensioning path, which should be maximally permissible within the scope of the tensioning limitation.
  • a slot extending in the circumferential direction is provided in the retaining ring and a pin is provided on the chuck body, which extends axially into the slot and ends the retaining ring rotation by a stop at the slot ends.
  • two axially parallel plane surfaces, each extending over the axial displacement area of the retaining ring, serve to fix the two limit positions of the retaining ring.
  • Each of these flat surfaces is opposed to two axially parallel, mutually oblique flat surfaces, which alternately come to rest on the respective flat surface of the chuck body and, through their mutual inclination, determine the angle by which the holding ring can be rotated to the maximum extent for retensioning the chuck body.
  • the retaining ring it must be ensured that the retaining ring is not only in its axial position locking the locking ring with the jaw guide part before the start of the drilling work, but also in terms of its rotatability in the limit position from which it rests in the sense of re-tensioning can turn other limit position so that the re-tensioning process is even possible and the full length of the tensioning path is available.
  • the retaining ring must therefore generally be actuated for its adjustment both in the axial direction and in the circumferential direction and, in addition, attention must be paid to the correct starting position of the retaining ring.
  • the invention has for its object to provide a chuck of the type mentioned in such a way that the retaining ring can be adjusted between its various operating settings in a simple manner without special knowledge and attention.
  • the counter toothing is formed on a toothed ring which is guided to a limited extent in a coaxial manner on the locking ring between at least one locking stop and a return spring assigned to the locking stop, the return spring pressing the toothed ring in the same direction of rotation against the locking stop as that of the locking ring when tensioning the drill chuck, that the teeth of the ring gear on the retaining ring and the counter-toothing on the toothed ring have a sawtooth shape, the steep tooth face of the teeth on the toothed ring running ahead and the teeth on the retaining ring running in the direction of rotation of the locking ring corresponding to the tensioning of the drill chuck and the oblique tooth backs are inclined so that when turning the locking ring in the clamping of the drill chuck in the opposite direction of rotation, the teeth of the toothed ring press the teeth of the retaining ring over the toothed back against the force of the locking spring out of the tooth engagement, and that a control
  • the advantage achieved by the invention consists essentially in that for the correct handling and adjustment of the drill chuck according to the invention, only the mutual rotation of the retaining ring and the jaw guide part is sufficient.
  • the control ring automatically gives the retaining ring those movements which it must carry out axially and in the circumferential direction between the various operating settings.
  • the torque used when clamping a drill by hand to mutually turn the retaining ring and the jaw guide member comes fully into effect for the drill clamping without the device for limiting the clamping or the Control device to be hindered.
  • the maximum possible clamping path for clamping the tool is always fully available.
  • the toothed ring which can be rotated to a limited extent with respect to the locking ring, already allows the jaw guide part to be rotated, even if the retaining ring initially has toothing engagement, until the retaining ring is released from the toothing engagement by the corresponding rotation of the chuck body entrained by the jaw guide part is and then the jaw guide part can be rotated further unhindered by the retaining ring relative to the chuck body now held by the retaining ring.
  • the tensioned or retensioned drill chuck is released with the help of the inclined tooth back, over which the jaw guide part and the retaining ring automatically press apart axially when the jaw guide part and the retaining ring are rotated accordingly, thus canceling the toothing engagement.
  • a preferred embodiment for reasons of constructive simplicity is characterized in that the locking ring has a plurality of sector-shaped recesses distributed over the circumference of the ring, in which the toothed ring is guided with corresponding sector-shaped projections, which are shorter in the circumferential direction by the rotation path of the toothed ring than the locking ring relative to its recesses , wherein one of the two circumferential end faces of each recess forms the locking stop for the projection and this at the opposite end in the circumferential direction by the Locking stop associated return spring is supported against the locking ring.
  • a further preferred embodiment is characterized in that the control device is formed by at least one control cam on the retaining ring and at least one probe head which moves along the control cam when the retaining ring is rotated and which is firmly seated on the chuck body, the control cam being associated with the tensioning movement and extending in the circumferential direction extending curve section which enables the retaining ring to engage the toothing, which is followed at one end by a post-tension limiting stop and at the other end by an inclined curve ramp, at which the retaining ring is released from the locking engagement by the probe and which leads to one of the two limiting stops, which leads to the maximum possible twisting path of the retaining ring finish towards the chuck body.
  • the probe attached to it ensures that the chuck body is held against turning while the jaw guide part is twisted to clamp the drill and the full clamping torque is exerted by hand on the jaw guide part. So that the toothing engagement can then automatically reestablish after the clamping has taken place, the inclination of the oblique curve ramp of the control curve is expediently steep enough so that the probe head attached to it cannot hinder the return of the retaining ring under the force of the locking spring in the toothing engagement, the probe head thereby so slips on the curve ramp.
  • an arrangement is recommended which is characterized in that the axial height of the post-tensioning limit stop is less than the mutual engagement depth of the toothing and the counter-toothing, and that a cam wing of the control curve connects to the post-tensioning limit stop, to which the retaining ring of Probe is released from the meshing engagement and a detent seat is formed for the probe head, the detent seat being followed by the second of the limit stops terminating the maximum possible rotation of the retaining ring.
  • the probe can then slide axially from the post-tension limiting stop and get into the latching seat, so that the retaining ring cannot automatically return to the toothing engagement under the force of the locking spring, but rather a targeted rotation in the sense of a new tension of the drill chuck is required for this .
  • a further stop device is provided between the retaining ring and the chuck body, consisting of at least one axially parallel plane surface on the chuck body and two opposing axially parallel and mutually oblique flat surfaces on the retaining ring, depending on the rotational position of the retaining ring with one of its two flat surfaces against the flat surface of the chuck body and the angle between the two flat surfaces of the retaining ring the maximum possible twist path between the retaining ring and determined the chuck body.
  • the probe is expediently designed as a radially protruding cam on an annular disk pushed onto the chuck body in a manner that prevents it from rotating.
  • the self-tightening drill chuck shown in the drawing is intended for operation on a hammer drill spindle, not shown.
  • the drill which is also not shown, is clamped between chuck jaws 1, which are inclined to the chuck axis in bores 3 of a jaw guide part 2 so as to be displaceable.
  • the chuck jaws 1 engage with a toothing 4 in a conical clamping thread 5 which is formed on a chuck body 7 which can be connected to the percussion drilling spindle with a receptacle 6.
  • the jaw guide part 2 is rotatably and axially non-displaceably guided on the chuck body 7 and has a locking ring 8 firmly connected to it, which, thanks to its fixed connection with the jaw guide part 2, can be rotated relative to the chuck body 7 and is axially immovable. Furthermore, a retaining ring 9 which limits the re-tensioning is provided, which is axially displaceable on the chuck body 7 and rotatably guided between different limit stops 10.1, 10.2, 10.3. There are a total of three of these limit stops, namely two limit stops 10.1, 10.3, which end the maximum possible rotation of the retaining ring 9 relative to the chuck body 7, and a further limit stop 10.2, which will be described in a manner to be described later.
  • the retaining ring 9 engages with a ring gear 12 under the force of a plurality of locking springs 13 axially into a counter-toothing 11 located on the locking ring 8 side.
  • the counter toothing 11 is formed on a toothed ring 15 which is coaxial on Locking ring 8 between a plurality of locking stops 16 and the locking stops 16 each associated return springs 17 is guided limited rotation.
  • the return springs 17 press the toothed ring 15 in the same direction of rotation against the locking stops 16 as the direction of rotation of the locking ring 8 with respect to the chuck body 7 when the chuck is tightened.
  • This direction of rotation is indicated in the drawing by the arrow 18.
  • the teeth 19, 20 of both the ring gear 12 on the retaining ring 9 and the counter-toothing 11 on the toothed ring 15 have a sawtooth shape.
  • the saw teeth are oriented so that in the direction of rotation of the locking ring 8 (arrow 18) corresponding to the steep tooth face 21 of the teeth 20 on the tooth ring 15 and the tooth face of the teeth 19 on the retaining ring 9 runs in the direction of tensioning of the drill chuck.
  • the oblique tooth back 22 of all teeth 19, 20 are inclined so that when the locking ring 8 is rotated in the direction of rotation opposite to the tensioning of the drill chuck, that is to say the arrow 18, the teeth 20 of the toothed ring 15, the teeth 19 of the retaining ring 9 via the tooth back 22 press against the force of the locking springs 13 out of the meshing engagement.
  • a control device, generally designated 23 is provided between the retaining ring 9 and the chuck body 7, by means of which the retaining ring 9 can be displaced against the force of the locking springs 13 when it rotates between the limit stops 10.1, 10.2, 10.3.
  • the maximum possible angle of rotation of the toothed ring 15 with respect to the locking ring 8 is at least the same the angle of rotation which the retaining ring 9 must execute in relation to the chuck body 7 in the opposite direction of rotation of the locking ring 8 in order to tighten the drill chuck in order to pass through the twisting path 24 (FIG. 5) associated with the retensioning and then still from the control device 23 the gear engagement to be solved.
  • the locking ring 8 has, according to the number of its locking stops 16, three sector-shaped recesses 25 distributed over the ring circumference.
  • the toothed ring 15 is guided with three corresponding sector-shaped projections 26 in these recesses 25. These projections 26 are shorter in the circumferential direction by the rotation path of the toothed ring 15 with respect to the locking ring 8 than its recesses 25.
  • one of the two circumferentially end faces of each recess 25 forms the locking stop 16 for the projection 26, and each projection 26 is at its in End of the locking stop 16 facing away from the circumferential direction is supported by the return spring 17 assigned to this locking stop 16 against the locking ring 8, each return spring 17 being held in a pocket 27 of the projection 26 assigned to it.
  • the control device 23 is essentially formed by two control cams 30 on the retaining ring 9 and two probe heads 40 seated firmly on the chuck body 7, which are designed as diametrically opposed cams on an annular disk 41 which is pushed onto the chuck body 7 in a rotationally fixed manner.
  • the probe heads 40 move along the control cams, which are of rotationally symmetrical design are diametrically opposed to the retaining ring 9.
  • Each control cam 30 has a circumferentially extending curve section 31 assigned to the tensioning movement, the axial position of which is determined by the fact that the holding ring 9 is in meshing engagement with the probe head 40 resting against this curve section 31.
  • This curve section 31 associated with retensioning is followed at one end by an oblique curve ramp 32, namely at the right end in FIGS. 5a to 5d of the tensioning limit stop 10.2 and at the other end, in FIGS. 5a to 5d at the left end. If the probe head 40 moves along this curve ramp 32 when the retaining ring 9 is rotated, the retaining ring 9 is released from the toothing engagement.
  • the curve ramp 32 leads to one of the two limit stops, which ends the maximum possible rotation of the retaining ring 9 relative to the chuck body 7.
  • the axial height of the tensioning limit stop 10.2 is less than the mutual engagement depth of the toothing 12 and the counter toothing 11, that is to say axially less than the height of the teeth 19, 20.
  • a curve wing is connected to the tensioning limit stop 10.2 to the right in FIGS. 5a to 5d 33 of the control cam 30, on which the retaining ring 9 is released from the probe head 40 from the toothing engagement.
  • a detent seat 34 for the probe 40 is formed on this curved wing 33.
  • the second 10.3 of the limit stops terminating the maximum possible rotation of the retaining ring 9 adjoins this detent seat 34.
  • the inclination of the inclined curve ramp 32 of the control curve 30 is sufficiently steep so that the probe head 40 that is in contact with it axially resets the retaining ring 9 under the force of the Barrier springs 13 can not hinder the meshing engagement.
  • a further stop device limiting the maximum possible twist path is provided between the retaining ring 9 and the chuck body 7. It consists of two flat surfaces 50 on the chuck body 7, which face each other and are parallel to the chuck axis and extend over the axial displacement area of the retaining ring 9. Each of these flat surfaces 50 are opposed to two axially parallel and mutually oblique flat surfaces 51, 52 on the retaining ring 9.
  • one or the other of its two flat surfaces 51, 52 comes into contact with the associated flat surface 50 of the chuck body 7, so that the angle between the two flat surfaces 51, 52 of the retaining ring 9 has the maximum possible twist path between the retaining ring 9 and the chuck body 7 determined.
  • the operation of the drill chuck can be described as follows:
  • the operating state of the feed shown in FIGS. 1 to 4 corresponds to the relationships shown in FIG. 5a. If there is a drill between the chuck jaws 1 and the jaw guide part 3 and with it the locking ring 8 are rotated in the direction of rotation corresponding to the closing of the chuck (arrow 18) relative to the chuck body 7 from the operating state shown in FIG. 5a, then at the latest when the chuck jaws 1 come to rest on the drill shaft, the chuck body 7 and thus its probe 40 are carried in this direction of rotation (arrow 18).
  • the probe 40 lies on the limit stop 10.1 formed by the control curve 30, but also the retaining ring 9 also with its flat surface 51 on the associated flat surface 50 of the chuck body, so that the angle of rotation 60 entered in FIG. 2 corresponds to the angle of rotation by which the retaining ring 9 has been rotated relative to the probe 40 from the position shown in FIG. 5a into the position shown in FIG. 5c.
  • the drill chuck can now be clamped with the maximum torque by turning the locking ring 8 in the direction of the arrow 16 or holding the retaining ring 9 in the opposite direction of rotation, which are applied by hand to the jaw guide part 2 on the one hand and the retaining ring 9 on the other hand can.
  • the locking springs 13 press the retaining ring 9 axially back into the toothing engagement, the retaining ring 9 running with its oblique curve ramp 32 on the probe head 40 and, as a result, again in Fig. 5a shown state is reached.
  • the toothed ring is first of all via the return springs 17 15 and taken along by this via the toothing engagement of the retaining ring 9 until the probe head 40 comes to rest on the post-tension limiting stop 10.2.
  • the jaw guide part 2 and the locking ring 8 can now carry out a further tightening rotation by compressing the return springs 17 until the end faces 70 of the recesses 25, which are opposite each other in the circumferential direction, come to rest on the end faces 71 of the projections 26 facing them. A further tightening process is then no longer possible. 5b shows this operating state. If the drill chuck is to be loosened, the jaw guide part 2 and with it the locking ring 8 are turned in the opposite direction of the arrow 18 relative to the retaining ring 9, namely until the end faces of the recesses 25 of the locking ring 8 forming the locking stops 16 end faces of the projections 26 lying opposite them come to rest.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP93115896A 1992-11-16 1993-10-01 Mandrin de forage autoserrant Expired - Lifetime EP0598208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4238464 1992-11-16
DE4238464A DE4238464C1 (de) 1992-11-16 1992-11-16 Selbstspannendes Bohrfutter

Publications (2)

Publication Number Publication Date
EP0598208A1 true EP0598208A1 (fr) 1994-05-25
EP0598208B1 EP0598208B1 (fr) 1998-12-16

Family

ID=6472867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115896A Expired - Lifetime EP0598208B1 (fr) 1992-11-16 1993-10-01 Mandrin de forage autoserrant

Country Status (6)

Country Link
US (1) US5375858A (fr)
EP (1) EP0598208B1 (fr)
JP (1) JPH06277913A (fr)
BR (1) BR9304701A (fr)
DE (1) DE4238464C1 (fr)
ES (1) ES2125291T3 (fr)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620068B1 (fr) * 1993-04-16 1997-01-08 Günter Horst Röhm Mandrin de perçage
DE4313742C2 (de) * 1993-04-27 2000-10-05 Roehm Guenter H Bohrfutter
DE19606795C2 (de) * 1996-02-23 1998-01-22 Metabowerke Kg Bohrfutter
DE19710565C1 (de) * 1997-03-14 1998-06-04 Roehm Gmbh Bohrfutter
US6073939A (en) 1998-06-05 2000-06-13 Power Tool Holders Incorporated Locking chuck
US6196554B1 (en) 1998-12-15 2001-03-06 Power Tool Holders Incorporated Locking chuck
US6702090B2 (en) 2001-03-14 2004-03-09 Milwaukee Electric Tool Corporation Power tool and spindle lock system
US7063201B2 (en) * 2001-11-27 2006-06-20 Milwaukee Electric Tool Corporation Power tool and spindle lock system
DE10215246B3 (de) * 2002-04-06 2004-01-08 Kunststoffzentrum in Leipzig gemeinnützige Gesellschaft mbH Spannvorrichtung zum Einspannen von ein- oder mehrkomponentigen, flexiblen, strangförmigen Wekstücken
US7360770B2 (en) 2004-08-17 2008-04-22 Black & Decker Inc. Keyless chuck with automatic and manual locking
DE102005007996A1 (de) * 2005-02-22 2006-08-31 Robert Bosch Gmbh Bohrfutter und Handwerkzeugmaschine mit einem Bohrfutter
FR2883208B1 (fr) * 2005-03-16 2007-05-11 Amyot Sa Sa Ets Mandrin porte-outil pour machine tournante, muni de moyens de verrouillage
FR2886183B1 (fr) * 2005-05-27 2007-07-13 Amyot Sa Sa Ets Mandrin porte-outil pour l'equipement d'une machine tournante, notamment du type "cle a choc"
US7455303B2 (en) * 2005-09-02 2008-11-25 The Jacobs Chuck Manufacturing Company Chuck with internal nut
US7845651B2 (en) * 2006-08-15 2010-12-07 Jacobs Chuck Manufacturing Company Locking chuck
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US20090200758A1 (en) * 2008-02-07 2009-08-13 Chin Hung Lam Auto Locking Chuck
US8403339B2 (en) 2008-06-18 2013-03-26 Jacobs Chuck Manufacturing Company Self tightening chuck with an axial lock
US8777232B2 (en) 2009-07-29 2014-07-15 Jacobs Chuck Manufacturing Company Self-tightening chuck with a radial lock
CN101869996B (zh) 2010-06-25 2012-06-13 山东威达机械股份有限公司 锁定机构、具有锁定机构的夹头装置以及紧固夹具
US20130025894A1 (en) * 2011-07-30 2013-01-31 Black & Decker Inc. Tool having torque-controlled spindle lock assembly
US8616561B2 (en) 2012-04-10 2013-12-31 Apex Brands, Inc. Locking chuck
US10556276B2 (en) 2013-03-14 2020-02-11 Apex Brands, Inc. Locking chuck
CN106424798B (zh) * 2016-02-05 2018-07-03 浙江三鸥机械股份有限公司 一种自锁式钻夹头
CN110227958B (zh) * 2019-05-06 2024-04-26 南京春辉科技实业有限公司 钻夹头夹持装置及方法
CN112620444B (zh) * 2020-11-10 2023-04-07 西北矿冶研究院 一种柱齿钎头柱齿压装模具
JP2022122236A (ja) * 2021-02-09 2022-08-22 株式会社 ムラテクノロジー チャック装置及び電動工具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2011130A1 (fr) * 1968-06-18 1970-02-27 Jacobs Mfg Co
FR2417363A1 (fr) * 1978-02-17 1979-09-14 Roehm Guenter H Mandrin de percage, en particulier a resserrage
WO1991012914A1 (fr) * 1990-02-23 1991-09-05 Robert Bosch Gmbh Outil a main a mandrin de serrage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3424679A1 (de) * 1984-07-05 1986-02-06 Hilti Ag, Schaan Bohrfutter mit spannkraftverstaerkung
DE3432918A1 (de) * 1984-09-07 1986-03-20 Günter Horst 7927 Sontheim Röhm Nachspannendes bohrfutter
DE3727147A1 (de) * 1987-08-14 1989-02-23 Roehm Guenter H Nachspannendes bohrfutter
DE58901039D1 (de) * 1988-11-23 1992-04-30 Roehm Guenter H Selbstspannendes bohrfutter.
DE3903443C1 (en) * 1988-11-23 1990-06-28 Roehm, Guenter Horst, 7927 Sontheim, De Self-tightening drill chuck
DE3914311C1 (fr) * 1989-04-29 1990-06-13 Guenter Horst 7927 Sontheim De Roehm
DE58904089D1 (de) * 1989-08-18 1993-05-19 Roehm Guenter H Nachspannendes bohrfutter.
DE4203200A1 (de) * 1992-02-05 1993-08-12 Roehm Guenter H Bohrfutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2011130A1 (fr) * 1968-06-18 1970-02-27 Jacobs Mfg Co
FR2417363A1 (fr) * 1978-02-17 1979-09-14 Roehm Guenter H Mandrin de percage, en particulier a resserrage
WO1991012914A1 (fr) * 1990-02-23 1991-09-05 Robert Bosch Gmbh Outil a main a mandrin de serrage

Also Published As

Publication number Publication date
JPH06277913A (ja) 1994-10-04
US5375858A (en) 1994-12-27
DE4238464C1 (de) 1994-03-03
BR9304701A (pt) 1994-05-24
ES2125291T3 (es) 1999-03-01
EP0598208B1 (fr) 1998-12-16

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